Back support cushion for wheelchair



1. Part of wheelchair

1.1 is a front perspective view of a back support cushion for wheelchair showing our new design;

1.2 is a rear perspective view thereof;

1.3 is a front elevation view thereof, in an unfolded state;

1.4 is a rear elevation view thereof, in an unfolded state;

1.5 is a left side elevation view thereof;

1.6 is a right view side elevation view thereof; and

1.7 is a top plan view thereof.

The broken lines in the reproductions illustrate stitching of which forms part of the claimed design. 

CLAIM The ornamental design for a back support cushion for wheelchair, as shown and described. 